Replacement Impeller for the Ultra 400 G3 Pump The Aquascape Ultra 400 Water Pump G3 Impeller Kit replaces the rotor-and-impeller assembly in the Ultra 400 G3 submersible pump when it chips, cracks, or wears to the point that the pump no longer reaches its rated flow. An OEM impeller restores factory flow rate without the cost of replacing the entire pump. Restore Rated Flow Without Replacing the Pump A damaged impeller reduces flow progressively, often appearing as a gradual decline in waterfall height or fountain display rather than a sudden stop. By the time the difference is obvious, the impeller has usually been running degraded for weeks. Replacing it with an OEM part restores the Ultra 400's rated output immediately and costs a fraction of a full pump replacement. Spec Value Compatible With Aquascape Ultra 400 Water Pump G3 Kit Contents Replacement impeller and rotor assembly How to Use Remove the pump from the pond and unplug. Remove the front cover to access the impeller cavity. Grasp the impeller and pull it straight out of the magnetic rotor. Insert the new impeller, pressing it firmly into the cavity until seated. Replace the front cover and reinstall. Confirm the pump restores full flow output after restarting. Ideal for Ultra 400 G3 pump owners experiencing reduced flow due to a worn or damaged impeller who want to restore rated performance without replacing the entire unit.
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